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Contact Aspiration with the New ARC Catheter for Thrombectomy of Acute Ischemic Stroke: Single-Center Results.
World Neurosurgery 2018 January
BACKGROUND/OBJECTIVE: Contact aspiration has gained growing acceptance in endovascular stroke therapy. The safety and efficacy data of the novel ARC catheter (Medtronic, Irvine, California, USA) used for intracranial thrombectomy have been poorly evaluated thus far. We report our preliminary results with the ARC with regard to angiographic reperfusion, duration of thrombectomy, safety, and clinical outcome at 90 days.
METHODS: In a single-center series including 20 large-vessel occlusion stroke patients who were collected prospectively, we retrospectively evaluated the safety and efficacy profiles of the ARC intracranial catheter for first-line contact aspiration. Successful reperfusion was defined as modified Thrombolysis in Cerebrovascular Infarction (mTICI) scores 2b-3 at final angiogram and functional independence as modified Rankin Scale score 0-2 at 90 days.
RESULTS: Median admission National Institutes of Health Stroke Scale score was 15, and previous intravenous thrombolysis was administered in 12 patients (60%). Proximal occlusion was located in the anterior circulation in 16 patients (80%). Primary aspiration alone was successful in 10 of 15 patients (67%) within a median time of 26 minutes. Overall successful reperfusion was achieved in 16 patients (80%) within a median time of 31 minutes. There were no device-related events. Median National Institutes of Health Stroke Scale score was 2.5 at discharge. Six of 17 patients (35%) were independent, and 6 (35%) died at 90 days. Symptomatic intracerebral hemorrhage occurred in 5%.
CONCLUSIONS: In our initial experience, the ARC appears safe and efficient for contact aspiration thrombectomy in large-vessel stroke therapy. However, improvement of its distal navigability needs further development to improve the success of aspiration alone, and large prospective studies are warranted.
METHODS: In a single-center series including 20 large-vessel occlusion stroke patients who were collected prospectively, we retrospectively evaluated the safety and efficacy profiles of the ARC intracranial catheter for first-line contact aspiration. Successful reperfusion was defined as modified Thrombolysis in Cerebrovascular Infarction (mTICI) scores 2b-3 at final angiogram and functional independence as modified Rankin Scale score 0-2 at 90 days.
RESULTS: Median admission National Institutes of Health Stroke Scale score was 15, and previous intravenous thrombolysis was administered in 12 patients (60%). Proximal occlusion was located in the anterior circulation in 16 patients (80%). Primary aspiration alone was successful in 10 of 15 patients (67%) within a median time of 26 minutes. Overall successful reperfusion was achieved in 16 patients (80%) within a median time of 31 minutes. There were no device-related events. Median National Institutes of Health Stroke Scale score was 2.5 at discharge. Six of 17 patients (35%) were independent, and 6 (35%) died at 90 days. Symptomatic intracerebral hemorrhage occurred in 5%.
CONCLUSIONS: In our initial experience, the ARC appears safe and efficient for contact aspiration thrombectomy in large-vessel stroke therapy. However, improvement of its distal navigability needs further development to improve the success of aspiration alone, and large prospective studies are warranted.
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